Hector Ariza

Search Impression Share (SIS) is the percentage of impressions an ad campaign, ad group, or keyword wins out of the total impressions it was eligible to receive. Budget, keyword selection, audience targeting, region, and scheduling all affect eligibility.

Search Lost Impression Share (Rank) is the percentage of search impression share lost due to Ad Rank, which depends on factors such as relevant keywords, ad quality, and bid amount.

Spend to Maximize Impression Share describes the investment level or budget an ad campaign needs to maximize Search Impression Share with its current targeting settings. It is based on the idea that an ad campaign’s spend or budget controls the frequency with which an ad is displayed.

Search Lost Impression Share (Budget) is the percentage of Search Impression Share lost out of the total eligible impressions, due to campaign budget. It is generally measured at the campaign level on digital advertising platforms.